Spring structure



D. H. VAN-HOVE SPRING STRUCTUR Oct. 16, 1934.

Filed Dec. 29. 1952 I m i m Mg m o F E m FM: v 6 A I .4 w W Y. m B

new orric* SPRING STRUCTURE Desire H. Van Hove, Detroit, Mich., assignorto gliAhYoung Spring & Wire Corporation, Detroit,

Application December 29, 1932, Serial No. 649,262

2 Claims.

The main objects of this invention are:

First, to provide an improved spring structure having a border frame ofthe upholstery clamping type in which the upholstery is very securelyclamped in a manner that is not likely to result in cutting theupholstery, and at the same time the clamping means is inconspicuous.

Second, to provide a structure of this character in which the upholsteryis very securely re- 'l tained and at the same time it is not necessarythat the parts be formed of heavy material.

Third, to provide a structure having these advantages which greatlyfacilitates the upholstering operation.

Fourth, to provide a structure which is very strong and rigid, both inthe complete structure and during the upholstering operations.

Qbjects pertaining to details and economies of the invention willdefinitely appear from the description to follow. The invention isdefined in the claims.

A structure which embodies the features of the invention is clearlyillustrated in the accompanying drawing, in which:

Fig. 1 is a plan View of my improved rim, a portion of the springsupporting bars being indicated in operative relation thereto.

Fig. 2 is a fragmentary vertical section of a spring cushion structureembodying my improve- -ments.

Fig. 3 is an enlarged fragmentary view showing the relation of the rimand the spring supporting bars.

Fig. 4 is a fragmentary perspective View of the rim or border frame.

Fig. 5 is an enlarged fragmentary section through the border frame andupholstery show ing the relation of the parts.

The structure illustrated in the accompanying drawing is a cushionadapted for trucks, busses and automobile seats. In this embodiment thebody springs 1 of the cushion are mounted upon supporting bars 2 havingsaddle portions 3 terminating in downwardly facing hook portions 4. Theupholstery 5 conventionally shown is provided with a skirt or sideportion 6 terminating in a bead 7.

The border frame comprises an outwardly facing channel 3 in which theedge of the upholstery is clamped. The upper arm 9 of this channel isbent downwardly into a flange-like portion 10 which is folded uponitself to provide an upstanding web or flange 11. This portion 9 ispreferably inclined inwardly as illustrated. The folded portion presentsa rounded shoulder 12 behind which the bead portion of the upholstery isdisposed. The hook portions of the spring supporting bars are engagedover the upper edge of this upstanding web or flange 11.

The lower arm 13 of the channel is clamped upon the upholstery inopposed relation to the rounded shoulder, the edge of the arm 13 lyingsubstantially in the vertical plane of the flange or web 11. The loweredge of the upholstery being wrapped around the shoulder is engagedtherewith with a snubbing engagement or effeet, so that the pull orstress on the upholstery is not resisted entirely by the clamping actionof the lower arm or flange 13 of the channel.

With the parts thus arranged a very rigid rim or border frame isprovided and one in which the upholstery is securely clamped andretained with out any substantial part of the metal being exposed at theoutside of the cushion. On account of its great strength and rigiditythe structure is well adapted for heavy work such as truck, bus, and carseats and the like. Further, in upholstering the free flange or arm ofthe channel may be driven down to clamping position, the flange or web11 and the fold resulting in the clamping shoulder very effectivelyresisting spring under the blows so that the upholstering operation isgreatly facilitated.

I have illustrated and described my improvements in a very practicalembodiment thereof. 1 have not attempted to illustrate or describecertain embodiments or adaptations which I contemplate as it is believedthat this disclosure will enable those skilled in the art to embody oradapt the same as may be desired.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a spring cushion structure, the combination with the body springsand supporting bars therefor, of a border frame comprising an outwardlyfacing upholstery clamping channel, the upper arm of which is downwardlyoffset and folded upon itself providing an upstanding support with whichsaid spring supporting bars are engaged, said fold presenting adownwardly projecting shoulder partially closing the channel, saidchannel terminating in a horizontal lower arm, the edge of the lower armof the channel when closed upon upholstery disposed in said channelbeing in opposed relation to the said folded downwardly projectingportion, and upholstery having its edge disposed in said channel at therear of said downwardly projecting portion and clamped between suchportion and the lower arm of the channel.

2. In a cushion structure, a border frame comprising an outwardly facingupholstery clamping 5 channel, the upper arm of which is downwardlyoffset and folded upon itself providing an upstanding spring unitsupport-web or flange, said

